Ventilating and air moistening apparatus



No. 613,5I0. Patented Nov. I, I898. .1. -A. HART.

VENTILATING AND AIR MOISTENING APPARATUS.

(Application flied Apr. 27, 1897.) (No-Model.) 3 sheets sheet l.

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No. 6l3,5l0. Patented Nov. I, I898. J. A. HART.

V VENTILATING AND AIR MOISTENING APPARATUS.

(Application filed A 27, 1897.)

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UNITED STATES PATENT Enron.

JOHN A. HART, OF BLACKBURN, ENGLAND:

VENTILATING AND AIR-MOISTENI NG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 613,510, dated November 1, 1898.

Application filed Ap'ri12'7, 1897- Serial No. 634,117. (No model.)

The object of my invention is to provide apparatus whereby air supplied by ventilating apparatus can be humidified by steam or watery vapor, so that the proper amount of water or watery vapor is taken up by or carried along with the air and distributed thereby without danger of an objectionable amount of water being emitted by the apparatus, so that there is no danger of water improperly depositing.

In an apparatus arranged or constructed according to my invention a fan or air-distributing apparatus of any suitable construction may be used. I arrange the apparatus so that water is deposited therefrom before the steam or watery vapor issues from the apparatus. The expansion of the steam insures that the tubes or parts at the outlet will not become too highly heated,'although they will be sufficiently warmed to avoid objectionable deposit of water in the place to be ventilated and humidified.

Of the accompanying drawings, Figure 1 represents in plan, and Fig. 2 in cross-section, an arrangement of apparatus according to my .invention as applied for use with a rotating fan and circular steam-tubes to correspond; but I do not confine myself to this form of the apparatus. Figs. 3 to 6 represent modifications, as hereinafter described.

The arrangement shown in Figs. 1 and 2 consists of two annular passages or tubes A and B, the steam entering and expanding in and passing around or partly around the first tube or passage A and then entering the lower tube or passage B and therefrom issuing from a number of pipes C, which open at one end to the exterior of the upper tube or passage A and pass therethrough and open at their other ends into the lower tube or passage B. When the steam therefore enters the first tube or passage A'by the inlet a in quantity controllable by a suitable valve, it passes therealong and around the exteriors of the tubes 0, as shown by the arrows, and warms them. It is prevented by the abutment a from passing in the other direction. The steam expands in the tube or passage A and imparts the requisite amount of heat to the said'tubes C, and then enters the lower tube or passage B by the pipe I), which descends into the waterdraining Well D, and after depositing any water of condensation in the said Well passes up into the tube or passage B, and therefrom through the tubes 0, which have been heated as described, and thence to the exterior, where the steam or watery vapor meets the air-currents projected by the fan or air-distributing apparatus (shown in the center of the figures) and is carried along therewith, the arrangement preventing large globules of water emerging from the apparatus,any water-globules which may issue being so small that they can be carried alongwith the said air-currents.

e is a space through which a current of dry or comparatively dry air will pass between the humidifier and the fan and so protect the fan from excessive moisture.

It is desirable not only that the tube A be of considerably larger cross-sectional area than the steam-inlet tube, but that the tube B be larger in cross-sectional area than the tube A and that the aggregate cross-sectional area of the tubes 0 be greater than that of the tube B. For example, supposing the entering steam to be at a pressure below one hundred pounds to the square inch, the inlet steam-pipe may be one-halt an inch internal diameter and the tube A two and one-half inches internal diameter, the cross-sectional area of the succeeding passages being somewhat greater. Only a few of the pipes O are shown in the plan, the situation of the others being indicated by dot and pick lines.

Although I have shown the apparatus as consisting of an annulus, it may be arranged in other suitable form. For example, it may be arranged in a straight line to lie alongside an air-inlet tube connected to a source of airsupply, as shown by Figs. 4. and 5 in plan and in transverse section, respectively. The parts which correspond with those shown in the preceding figures are marked with the same letters of reference and the arrangement will therebybe readily understood without further description.

The supply of humidifying steam or watery vapor should be cut off when the fan is stopped and supplied again when the fan is started.

I do not limit myself to the precise construction shown in the hereinbefo re-described drawings. For example, the apparatus may be made as shown in cross-section in Fig. 3, the chambers for the expansion of the steam and deposit of water being divided by the di vision f, provided with a perforated part at f leading into a part f divided from the chamber by plates, one of which, f has an opening at the bottom for admitting the steam into the chamber B. The part f constitutes the water-well and the steam or watery vapor passes in the direction of the arrows. In each case the passage for steam from the tube A to the tube B is preferably made of a number of openings, presenting a total passage equal or about equal to the cross-sectional area of the tube A. a: is a water-sealed overflow for the water from the drainage-Well f.

Fig. 6 represents in vertical section other forms which the apparatus may take. Somewhat diiferent forms are shown on each side of the figure. The trough B contains a pipe A, through which steam is passed. The said pipe A may advantageously be three-fourths inch internal diameter, with a steam-inlet one-half inch diameter, and the perforations a? for the issue of steam therefrom be spaced about two inches apart and be one-eighth of an inch in diameter. In the arrangement shown on the right-hand side a plate 3 depends from the lower side of the steam-pipe A, and the perforations a are inclined outward at one side of the said plate 3, so as to thoroughly distribute the steam in the trough B. The steam issues from these perforations into the trough B, and thence beneath the plate .9 and out from the upper part of the trough by the outlet 0, then mingling with the air propelled by the fan, any objectionable globules of water being deposited in the trough B and passing 0E by the siphon-pipe :13. In the construction shown on the left-hand side the steam-pipe A is supported on a plate 3 attached to the bottom of the trough B, the perforations a in the pipe A being at both sides of the plate .9 and close thereto and preferably parallel therewith. The outlet 0 is shown as being a slit between upstanding lips instead of being of the form shown on the righthand side. A deflector 1; may be used to guide the steam gently into the air-currents propelled by the fan. Channels 10 are in both constructions provided in the upper part of the trough, in which channels any water that may deposit on the outer surface is received and reevaporated or drained off.

The fan and air-distributing parts may be of any suitable description. They are shown in the drawings as consisting of a rotating fan proper, B delivering air into a stationary cage Y and jets 1 through the passages 0. The said cage Y is supported by the arms .2, which by the attachments .2 and strips 2 also support the trough B.

I claim as my invention 1. In combination with an air-current-creating apparatus, a device for supplying steam or watery vapor and having chambers through which the steam or watery vapor is caused to pass and permitted to expand, and outlets from said chambers for the expanded steam to issue directly into the air-current, substantially as described.

2. In combination with ventilating apparatus, a humidifying apparatus consisting of an inlet for steam or watery vapor to a tube or annulus of enlarged area, through which outlet tubes or passages pass, the said tube or annulus being in communication with another tube or annulus provided with a water-depositing well from which last-named tube or annulus the said outlet tubes or passages open, the arrangement being such that the steam or watery vapor enters the first tube or annulus and expands therein and warms the outlet tubes or passages and then passes into the second tube or annulus and therein deposits watery particles and then issues from the said outlet tubes or passages in proper condition to pass with the ventilating-air into the apartment or place being ventilated, substantially as described.

3. In a ventilating apparatus, the combination of an air-current-creating apparatus with a humidifying apparatus, having a tube or annulus for the expansion of steam or watery vapor, an inlet thereto, said tube being in communication by openings with another tube or annulus, in which the steam expands, and deposits its objectionably-large globules of water, and outlets from said last tube, as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

J. A. HART.

\Vitnesses:

JOHN Bruce's, JOSEPH GILL. 

